21
To enter self-diagnostic mode:
Turn the power switch on while simultaneously pressing needle up/down button and the start/stop button.
Press the start/stop button five times to select menu item "6".
Press the needle up/down button.
If the interval between each step is longer than 2.5 seconds, the machine will revert to normal sewing mode.
Should this occur, start over again from the step 1.
Preparation:
1. Turn the power switch.
2. Move the bobbin winder spindle to the left.
3. Raise the feed dog.
4. Set the speed control lever to the left.
5. Remove the presser foot and raise the presser foot lifter.
6. Turn the hand wheel toward you to raise the needle to its highest position.
7. Connect the foot control to the machine.
Notes:
• Be careful: the sewing machine may start running in its own while in test mode.
• Turn off the power switch before replacing any parts.
• Repeat the diagnostic test until the problem has been resolved.
• You can skip steps in the diagnostic procedure and go directly to the test you want to perform.
(Enter self-diagnostic mode, then select the step number of the diagnostic test you require by
pressing the needle up/down button)
To begin:
Turn on the switch, if any of the following problems occur, take the recommended actions in the order
they are shown.
1. The machine does not respond when the power switch is turned on:
Check each connector connection
Replace the machine socket
Replace the A-board
Replace the power transformer
2. The sewing machine lamp does not light up:
Replace the light bulb
Replace the A-board
3. The LED display shows " " to " " :
Replace the A-board
START
STOP
START
STOP
START
STOP
Self-diagnostic Test
